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using XenAdmin.Network;
using XenAdmin.Core;
using XenAPI;
using XenAdmin.Dialogs;
using System.Windows.Forms;


namespace XenAdmin.Commands
{
    /// <summary>
    /// Deconfigures Workload Balancing for the selected Pool.
    /// </summary>
    internal class DisconnectWlbServerCommand : Command
    {
        /// <summary>
        /// Initializes a new instance of this Command. The parameter-less constructor is required if 
        /// this Command is to be attached to a ToolStrip menu item or button. It should not be used in any other scenario.
        /// </summary>
        public DisconnectWlbServerCommand()
        {
        }

        protected override void ExecuteCore(SelectedItemCollection selection)
        {
            if (Helpers.FeatureForbidden(selection[0].XenObject, Host.RestrictWLB))
            {
                using (var dlg = new UpsellDialog(HiddenFeatures.LinkLabelHidden
                        ? Messages.UPSELL_BLURB_WLB
                        : Messages.UPSELL_BLURB_WLB + Messages.UPSELL_BLURB_TRIAL,
                    InvisibleMessages.UPSELL_LEARNMOREURL_TRIAL))
                    dlg.ShowDialog(Parent);
                return;
            }

            using (var dialog = new WarningDialog(Messages.WLB_DISCONNECT_SERVER,
                ThreeButtonDialog.ButtonYes, ThreeButtonDialog.ButtonNo))
                if (dialog.ShowDialog(Program.MainWindow) == DialogResult.Yes)
                {
                    var action = new Actions.Wlb.DisableWLBAction(selection[0].PoolAncestor, true);
                    action.Completed += Program.MainWindow.action_Completed;
                    action.RunAsync();
                }
        }

        protected override bool CanExecuteCore(SelectedItemCollection selection)
        {
            if (selection.Count == 1)
            {
                IXenConnection connection = selection[0].Connection;
                Pool pool = selection[0].PoolAncestor;
                bool inPool = pool != null;

                return inPool  && (Helpers.WlbConfigured(pool.Connection) && !Helpers.FeatureForbidden(connection, Host.RestrictWLB));
            }
            return false;
        }
    }
}
